Improvement in shutter-workers



@anni @Mira `Hauer WQ .BoYNToN, orHAvERHILL, MASSACHUSETTS.

' Leners Patent No.1o6,114, 1aed August o, 1870.

IMPROVEMENT IN SHUTTER-WORKERS.

The Schedule referred to in these` Letters Patent and making part of thesamev `To all persons to whom these presents may come:

Be it `known that I, HENRY W. BoYNToN, of Haverhill, iu the county ofEssexand State 'of Massachusetts, have inventeda new and usefulImprovement in Mechanism for Operating a Window-Blind or Shutter; and dohereby declare the same to be fully described in the followingspecification, and represented in the accompanying drawing,- of which-Figure l is a top view,

Figure 2', a bottom view, and

Figure 3, a sideelevation of it.

Figure 4 is a front elevation of a blind and windowframe with inyinvention'applied thereto;

Figure 5`is a vertical and transverse section of the 1 saidwindow-frame, it being taken `through the lever of the operativemechanism.

` In the drawingi A denotes a pivoted bracket, which, when in use, isfastened to thewblimh or arranged therewith, in manner vas shown inigs.14 and 5. l

This bracket hasa'circular bearing, a., extended from it, a pivot, b,being projected down from the said bearing.

This pivot goes through a connection bar', B,near one end oi' such bar,and serves to aid in joining it to the bearing.

The bal-.Bat its'other eudis jointed to a lever, C, which has extendedfrom it, in manner as shown, a

`prong or arm, D,'which, at its outer end, isor may be turned upward, orthere provided with arounded projection, c, to bear against the underside ofthe bearing-a. Y

When in use, the lever O goes through the windowframe, and is disposedtherewith and with the bracket and th bar B inmanner as represented infigs. 4

and5. i

.,'Ihe lever, with the bar B and arm D, are intended to operate theblind, or raise it and open and close it iu manner in-which the lever,shown inthe United States patent No. 89,150, accomplishes such.

1n the United States patent No. 54,996, a'blind! hiugeis shown asprovided with an arm, a, connecting-bar,and a sliding bolt, which, iusome respects,

are analogous to the pivoted projection af, the link or bar B, and thelever C, of my blindopera-tivev meollalnsm.

In carrying out my present invention, I not only havesought to avoid theuse of the angular-ly slotted head of the operative lever, as shown inthe iirstnamed of the aforesaid patents, (there being practicalobjections to such a head,)y but I have endeavored to substitute ,for itthe connection-bar, and I have combined with such bar, and the parts toVwhich it is jointed, the bearing a, and 'the prong or arm D, having theextensions c, they enabling the blind notonl y to be swung back, andforth by the lever, but to be lifted so as to unfastcn the blind,whether open or closed.

' I would remark that for correctoperation of my improved mechanism thatis to enable it to raise the blind, the holes of the link or bar Baswell as the crotch oi`- the fork of the lever, should be wide or largeenough to admit of" the lever being moved vertically on its fulcruinIthe necessary amount, the extension c of the prong or` arm Dalways'being underneath and against the circular bear-ingo, while thebracket is fixed toa blind, and the lever goes through the window-frame,and has itsfulcrum therein.

I make no claim to any thing or things, or com bination or arrangementof -ngiechanical devices as represented or described in either ot' thelaforesaid patents.

I claiml The arrange-ment and combination of the circularbearii'ig-plate a, and the prong or arm I), with the lever C, thelink orbar B, the pivot b, and the bracket A, the whole being for applicationto a window-blind or shutter and its frame, substantially in manner and'for operating the same, as hereinbefore explained. 4HENRY W.' BOYNTON.

Witnesses:

It. H. EDDY, J R. SNOW,

